T1KARMANN said:i think it depends if they are so young that they still have their exturnal gils which would mean they would need loads of air
IoStrisciare said:the external gills are there as they're internal air breathing system isn't complete yet.
Its part of the life cycle for young bichirs, i wouldn't call it evolution.DeLgAdO said:so their still evolving?
I think that their internal breathing system develops very early in life, i've seen tiny tiny bichirs without external gills, for example, my 2" retropinnis didn't have external gills.the external gills are there as they're internal air breathing system isn't complete yet.